Turret-lathe.



C. L. LIBBY.

TURRET LATHE. APPLICATION FILED FEB. e, 1908.

" Patented 0ct. 26, 1909.

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- INVENTOR A TTORNE Y.

0.. L. LIBBY.

TURRET 'LATHE.

APPLIGATION FILED FEB. 63, 1908.

Patented Oct. 26, 11909.

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IHIII llllll I "I I! III . LWENTOR. @lmrles Libby, BY

A 1701mm.

WITNESSES: 71 M.

G. L. LIBBY.

TURRET LATHE.

APPLICATION FILED FEB. 6, 190a.

Patented 0ct.26,1-909.

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. ATTORNEY.

C. L. LIBBY.

I TURRET LATHE. APPLICATION FILED FEB.G,19 08.

A TTORNE y.

Patented Oct. 26, 1909.

4 SHEETSSHEET 1.

WITNESSES: I

CHARLES n'mzeey, or mnrnnnroms, INDIANA. j

- like numerals refer to like The object of this inventlon is to provide" an improved construction of turrets for runner-terns.

Specification of Letters Patent.

Application filed February 6, 1908. Serial No.414,501.

To all'whom it may concern: Be it known that I, CHARLES L; Linen-of Indianapolis, county of Marion, and State of Indiana, have invented a certain new and useful Turret-Lathe; and I do hereby declare'that the following is a full, clear,- and exact description thereof, reference being.

had to the accompanying drawings, in which arts.

lathes, especially with relation to'means for adjusting the positionof the. turret and for locking it in the adjusted position.

One feature of the invention consists in the rovision .of' a. vertical spring-actuated locking in adapted to enter any one of a nection an externally operable lever is pro- 7 ided that engages a rack-baror rod which,

l pin from the turret. I

Another feature of the invention consists series of olesin the-bottom of the turret for locking it in position, and an' externally operab e means for lowering and disengagin said locking pin while the turret 1s bemg turned to a new position. In this conmoves atrip, and through it actuates a mutilated pinion that engages teeth on the locking pin for disengaging said locking in a clampingring for clamping the turret in place tothe stationary part uponwhich cam'rod for drawing the ends of saidring claims.

it is mounted. Said ring is a split ring with the two parts hinged at one side and enveloping the adjacent portions of the .turret' and the means on whlch it' is mounted, and a together Another feature of the inventionconsists in a single means, herein a lever,l which simultaneously withdraws the locking pin from the turret and releases theclampm' ring, so that the turretcan be adjusted'and which afterward tightens the clamping ring and simultaneously returns the means for disenga ing the lockm pin.

The full iature of h's l nventionwill be understood from the accompanying drawings and the following 'descr1pt1on, and

.In the drawings'Figure 1 is a side elevation of the turret-and the-upper, part of the lathe lied, the remainderthereof being broken away- F g. 2 is view of what is shown in F .1 partly 'in plan-and partly m section to s 'ow gthe internal nonstructlon.

' Fig. :3 is -a -v ertical, section Jon ,the crooked lathe bed is in vertical section.

line 3.i3.of 2, the upper part of the turret. being broken away and showing the turret locking pin in oneof its locking positions. In Fig. 4 the upper part of the .de-

Vice is shown in vertical section on the line 44 of Fig. 2, while the central part of the device-is shown in, end elevation, and the Fig. 5 is a vertical transverse section on the line 5--5 of Fig. 1, omitting the feed indicator. The

upper half of Fig. dis a horizontal sectio'n on the line 6 6 and the lower halfis a similar section on the line 6 -6 of Fig. 5.

. Fig. 7 is a detail view of the ends of. the

turret clamp and means for tighteningit. Fig. 8 isa vertical section on the line 8-8 of Fig. 7. Fig. 9-is thesame with the lever operated to loosen the clamp. Fig. 10 is a horizontal section on the line 1010 of Fig. 3 showing the gear pin for actuating the locking pin. Fig. 11 is a side elevation of the gear pin shown in Fig. 10. Fig. 12

is a section of a portion of the device on the line l2-+12 of Fig. 10. ,Fig. 13' shows the left hand half of what appears in Fig. 3

with.the locking pin in its downmost disen- Patented Oct. 2e, 1909.

gaging position. Fig. 14 is'a section on the me 1414 of Fig. 10. -Fig. 15 shows the lowerpart of Fig. 13 when the rack pin has reached its limit ofmovement.

. In the machine shown herein for the urpose of illustrating the general nature 0 my' invention, there is alathe bed 30 upon which a turret base 31. .rests so as to be slidable. The form and position of these parts are shown in Fig.5, where the'bed of the lathe is longitudinally and centrally recessed on its upper' side and the turret base has a downwardly extendin flange 32 along one side adjacenta latera edge of the be and theholdin 'plate'33ds secured to the bottom of sai flange by. a screw 34, said plate holder rojecting under the lateral edge of the be so that the turret base cannot be elevated without the removal of the bar 33. -Thre is also a downwardly extending flange 35 rejecting into the recess in the top of the athe bed and beside one lateral wall of said recess. At'the. left hand, asshown in Fig. 5, the turret base projects laterally beyond the bed and an apron 36 is secured,

thereto and extends downwardly therefrom immediately beside a lateral edge of the bed.

From the foregoing description and as shown in Fig. 5, it .is seen that the base can have no lateral play on the lathe bed.

nThe turret base has an upward ektension 37 from the body thereof at one end, as appears in Fig. l,- and thatextension is provided with a central chamber 38, see Fig. 5,

and there is an inwardly extendingxannular flange 39 froni the upper part of said extension37, upon which there is mounted a bearfits about the centralportion of the bearing .ring, as shownin F ig. 5. Said part 44 of the turret has an annular external recess in it which. leaves an annular rib along its lower edge. The bearing ring 40 has a c r responding annular rib along'its upper edge and adjacent the annular Ilb on the lower end ofthe turret. The clamp ring-surroundslthe' upper part of the bearing ring 40, and the lower part 44 of the turret. The

' clamping ring 45 is made of two halves connected together at one side by the bolt 46, see Fig. 6, and at the other side opposite the location of the bolt 46 the ends of the clamp sections 45 are provided with ears 47 in which the eccentric straps 48 and 49 are pivoted, said straps being connected by an ec- "centric or crank shaft 50 vertically disposed,

as shown in Figs. Sand 9', andactuated by a hand lever 51 at the lower end of the shaft. When the hand" lever is asshown in Figs. 7 and 8, the ends of the clamp ring are drawn together, and when the' said lever is in the position shown in Fig. 9 the clamp ring is relaxed. When the clamp ring is relaxed the turret can be turned.

The turret has on its under side an annular series of holes 55 adapted to receive a locking pin 60. In each of saidholes there is a bushing 57. There is one locking pin by which ,the turret is held in any adjusted position. Said pin is mounted in a casing 58. that is secured in the boss 160 whichextends downwardly from the hearing ring 40, see Figs. 3 and 6. The locking pin 60 is forced upwardly by the spring 61 which is partially embedded in said pin at one end and bears against the nut 62. :The spring 61 forces said locking pin' into its locking position. Said pin is withdrawn from "its locking position by a mutilated seg- "Inental gear 63 on thegear pin'64, the teeth fthereofmeshin-g with. a rack 65 on one side of the pin 60 near its lower end, as shown "in Fig. 3. To enable these parts to mesh the casing 58 is cut away at 66 so that the gear pin may project through the casing mto engagement with the locking pin. The gear pin'64 is mounted in a horizontal position in the horizontal bearing 67 from one side wall of the upper part of the turret base, see Fig. 6. Said gear pin 64 is actuated by a slidable rack pin 68, see Figs. 3 and 12," that engages the upper end of the trip 69 fulcrumed on the pin 70 in the end of a chamber 71 about midway of the gear .The trip 69 is held against the stop 72 by a spring 73.

' The gear pin 68 is slidable horizontally in a chamber 74 in the upper part of the turret base, see Fig. 3, the rack on said pin 68 be ng formed by notches 7 5 that mesh with the segmental gear on the end of the hand lever 51, as shown in Fig. 2. The same hand lever is on the eccentric shaft 50, wherefore, by the operation of the single hand lever the clamping ring 45 will be released at the same time that the locking, pi1r6O is-moved into a downward disengaging position. This position of the pin 60 is shown in Fig. 13. Then the turret can be turned andadjusted. A further movement of the lever 51 causes the rack pin 68 to reach its inward limit of movement, as shown in Fig. 15 and in the latter part of this inward movement the point of the lower part of the inner end of the rack pin will disengage the upper end of the trip 69, so that the gear pin 68 will cease to hold the locking pin downward and when a hole 57 in the turret is in registry with the pin 60 it will be immediately forced upwardly by the spring 61 and such upward movement of the pin 60 will cause the partial rotation of the gear pin 63 and trip 69, the upper end of the trip 69 lying then in the recess 168 provided for it in the under side of the rack pin 68. Then when the lever 61 is moved to the left to its position shown in Fig. 2, the rack pin 68 will be withdrawn to its outer position as shown in Fig. 3, and as it is thus withdrawn the upper end, of the trip 69 will disengage the pin 68 and said trip will be brought to its normal position by the spring 73. Since the lockingpin 60 is thus released when the lever 51 is moved to its right hand limit, it is apparent that the clamping ring will be relaxed and the turret can readilybe turned to the desired position and the locking pin will be free to-move upwardly into the proper hole in the turret for turret in its adjusted position to the part upon which itis mounted.

The turret has, corresponding with each proper holding the turret. Then, since the force said pin upwardl vided on its under side of the'six holes for the locking pin 60, a tool hole 80 and a set screw 81 projecting into said tool hole for clamping the tool in position.

What I claim as my invention and desire to secure by Letters Patent is:

1. A turret lathe includinga turret prowith a series of holes, means on which said turret is, revolubly mounted, a vertically movablelocking pin mounted below said turret in position to engage any one of said holes and having a rack on one side thereof, a spring adapted to force said pin upwardly, a revoluble gear pin in position to engage the rack on said locking pin, a sprin'gdi'eld trip pivoted in said gear pin so as to actuate it, an externally mounted lever, and means actuated by said lever for engaging said trip and turning said gear pin so as to withdraw said locking pin from the turret, and then disengaging said trip to permit the return movement of the locking in. 4 p 2. Aiturret lathe including a turret provided on its under side with a series of holes, means on which said turret is revolubly mounted, a vertically movable locking pin mounted below said turret in position toengage any one of said holes and-having a rackon one side thereo a spring adapted to a revoluble gear pin in position to engage the rack on said locking pin, a spring-held trippivoted in said gear pin, an externally mounted lever, and a sliding bar actuated by said lever that engages said trip for turning the gear pin and Withdrawing said locking pin, said sliding bar being arranged to disengage said trip during the movement of the bar.

3. A turret lathe including a turret provided on its under side with a series of holes, means on which said turret is revolubly mounted, a vertically movable locking pin mounted below said turret in position. to engage any oneof said holes and having a rack on one side thereof, a spring adapted to force said pin upwardly, a revoluble gear pin in position to engage the rack on said locking pin, a spring-held trip pivoted insaid gear pin, a sliding-bar with its inner end adaptedto engage said trip for turning the gear pin and withdrawing the locking pin as said bar is moved inwardly, said sliding bar being arranged so as to escape from the end of said trip before the inward limit of movement of the bar is reached to'permit the locking pin to return to locking position, and external means for operating said rack bar.

4. A turretlathe including a turret provided on its under side with a series of holes, means on which said turret is revolubly mounted, a vertically movable locking pin mounted below said turret in position to en gage any one of said holes and having a rack on one side thereof, a spring adapted to force said pin upwardly, a revoluble gear pin in position to engage the rack on said lockin pin, a spring-held trip pivoted eccentrically' in said gear pin, a stop on the gear pin that is normally engaged by said trip a sliding bar with its inner end adaptedto actuate said trip for turning the gear pin and withdrawing the locking pin as said bar moves inwardly, said sliding bar being recessed near its inner end to permit said trip to escape from the bar before the bar has reached its inner limit of movement and thus permit the locking pin to move upwardly into locking position, and an externally mounted lever for operating said sliding bar.

5. A turret lathe including a turret with a series of holes on its under side, means on which said turret is revolubly mounted, a locking pin mounted below said turret in position to engage any one of the holes therein and having a rack on one side thereof, a spring adapted to force said pin upwardly, a revoluble gear pin in position to engage the rack on said locking pin, a spring-held trip mounted eccentrically in said gear pin, a sliding rack bar the inner end of which when moved inwardly en gages andactuates said trip for turning the gear pin and withdrawing the locking pin and from which said trip escapes before the limit of the inward movement of said rack bar has been completed, and a hand lever provided with a segmental gear for engaging said rack bar, the parts being so arranged that when said handlever is moved in one direction it will cause the withdrawal of the in the same direction will cause the trip to escape from the end of the sliding rack bar and release the locking pin, and when the lever is moved in the opposite direction it will return the sliding rack bar to its normal position.

In witness whereof, I have hereunto altixed my signature in the presence of the wit uesses herein named.

CHARLES L. LIBB Y.

Witnesses:

OLIVE BREEDEN, V. H. Loonwooi).

ioo

locking pin and when moved farther v 

